Soft Starters

Select the starter range, motor rating at 400 V and control supply. 3RW30 uses separate overload protection; 3RW40 includes motor overload protection.

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Soft starter S0, 12.5 A, 5.5 kW/400 V, 40 degree, 200-480 V AC, 24 V AC/DC — Siemens 3RW40 product artwork for the selected frame. Rating and voltage markings may vary.

Product specification

3RW4024-1BB04

SIRIUS 3RW40 soft starter, 5.5 kW at 400 V, 12.5 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.

Datasheet ↗

Dimensions & specifications

kW values are a guide for 400 V motors at 40°C and normal starting (CLASS 10). Size against motor nameplate current and starting duty. 3RW30 requires separate overload protection.

Accessories & related parts

Part numbers & documents

3RW4024-1BB04 SIRIUS 3RW40 soft starter, 5.5 kW at 400 V, 12.5 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.
3RW4024-1BB14 SIRIUS 3RW40 soft starter, 5.5 kW at 400 V, 12.5 A at 40°C, 110–230 V AC/DC control supply. Integrated motor overload protection.
3RW4026-1BB04 SIRIUS 3RW40 soft starter, 11 kW at 400 V, 25 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.
3RW4026-1BB14 SIRIUS 3RW40 soft starter, 11 kW at 400 V, 25 A at 40°C, 110–230 V AC/DC control supply. Integrated motor overload protection.
3RW4027-1BB04 SIRIUS 3RW40 soft starter, 15 kW at 400 V, 32 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.
3RW4027-1BB14 SIRIUS 3RW40 soft starter, 15 kW at 400 V, 32 A at 40°C, 110–230 V AC/DC control supply. Integrated motor overload protection.
3RW4028-1BB04 SIRIUS 3RW40 soft starter, 18.5 kW at 400 V, 38 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.
3RW4028-1BB14 SIRIUS 3RW40 soft starter, 18.5 kW at 400 V, 38 A at 40°C, 110–230 V AC/DC control supply. Integrated motor overload protection.
3RW4036-1BB04 SIRIUS 3RW40 soft starter, 22 kW at 400 V, 45 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.
3RW4036-1BB14 SIRIUS 3RW40 soft starter, 22 kW at 400 V, 45 A at 40°C, 110–230 V AC/DC control supply. Integrated motor overload protection.
3RW4037-1BB04 SIRIUS 3RW40 soft starter, 30 kW at 400 V, 63 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.
3RW4037-1BB14 SIRIUS 3RW40 soft starter, 30 kW at 400 V, 63 A at 40°C, 110–230 V AC/DC control supply. Integrated motor overload protection.
3RW4038-1BB04 SIRIUS 3RW40 soft starter, 37 kW at 400 V, 72 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.
3RW4038-1BB14 SIRIUS 3RW40 soft starter, 37 kW at 400 V, 72 A at 40°C, 110–230 V AC/DC control supply. Integrated motor overload protection.
3RW4046-1BB04 SIRIUS 3RW40 soft starter, 45 kW at 400 V, 80 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.
3RW4046-1BB14 SIRIUS 3RW40 soft starter, 45 kW at 400 V, 80 A at 40°C, 110–230 V AC/DC control supply. Integrated motor overload protection.
3RW4047-1BB04 SIRIUS 3RW40 soft starter, 55 kW at 400 V, 106 A at 40°C, 24 V AC/DC control supply. Integrated motor overload protection.
3RW4047-1BB14 SIRIUS 3RW40 soft starter, 55 kW at 400 V, 106 A at 40°C, 110–230 V AC/DC control supply. Integrated motor overload protection.

Soft Starters

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